import type { ToolRegistryContract, ToolResult } from '../../types/tool/index.js';
import type { ToolCallView, ToolResultView } from '../../types/tool/presentation.js';
import type { Logger } from '../../utils/logger.js';
/**
 * Asks a tool how it should be shown, and falls back when it has no
 * opinion.
 *
 * The fallback is not a placeholder — it is the exact behaviour one host
 * had already converged on, moved to where every host can reach it. What
 * changes is that a tool the host never heard of can now override it.
 */
export interface ToolPresenter {
    presentCall(toolName: string, input: unknown): ToolCallView;
    presentResult(toolName: string, input: unknown, result: ToolResult): ToolResultView;
}
/**
 * The label a tool with no opinion gets.
 *
 * The pick order is load-bearing and was arrived at by use. `description`
 * is LAST so it only speaks for a tool none of the others describe — those
 * tools were falling through to a truncated `JSON.stringify`, which is how
 * a delegation tool came to show a blob of its own arguments while
 * requiring the model to write a label nothing then read.
 */
export declare function genericLabel(input: unknown): string;
/**
 * `registry` is the `ToolRegistryContract` a turn already holds, so a
 * presenter never needs its own copy of what is registered — and a tool
 * added at runtime by a plugin is presentable the moment it is registered.
 */
export declare function createToolPresenter(registry: ToolRegistryContract, logger?: Logger): ToolPresenter;
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